#1D3F7C#1D3F7C

#1D3F7C is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.8% C 0.111 H 261.0°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#1D3F7C
RGB	rgb(29, 63, 124)
HSL	hsl(219, 62%, 30%)
HSV	hsv(219, 77%, 49%)
CMYK	cmyk(76.6%, 49.2%, 0%, 51.4%)
CIE-LAB	lab(27.49, 10.74, -38.26)
CIE-LCH	lch(27.49, 39.74, 285.68°)
OKLab	oklab(37.84% -0.0174 -0.1098)
OKLCH	oklch(37.84% 0.111 261)
XYZ	xyz(5.9210, 5.2708, 19.7702)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3F7C #7C5A1D

analogous

#1D6F7C #1D3F7C #2A1D7C

triadic

#1D3F7C #7C1D3F #3F7C1D

tetradic

#1D3F7C #7C1D6F #7C5A1D #1D7C2A

square

#1D3F7C #7C1D6F #7C5A1D #1D7C2A

split-complementary

#1D3F7C #7C2A1D #6F7C1D

monochromatic

#060D19 #11264A #1D3F7C #2958AE #4175D3

Accessibility & contrast

On white

10.22

#1D3F7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#1D3F7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3F7C

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3F7C	#FFFFFF	#000000	##FFFFFF
##1D3F7C	1.00	10.22	2.05	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E467E

Deuteranopia (green-blind)

#043D7B

Tritanopia (blue-blind)

#004D57

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1d3f7c;
/* rgb */ color: rgb(29, 63, 124);
/* oklch */ color: oklch(37.8% 0.111 261.0);

Tailwind

colors: {
  custom: {
    50: '#6773a2',
    500: '#1d3f7c',
    950: '#000000',
  },
}

SCSS

$custom: #1d3f7c;
$custom-light: #6773a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3f7c",
  "rgb": {
    "r": 29,
    "g": 63,
    "b": 124
  },
  "hsl": {
    "h": 218.526,
    "s": 62.092,
    "l": 30
  },
  "oklch": {
    "l": 0.37843,
    "c": 0.11116,
    "h": 261
  },
  "luminance": 0.05271
}

Semantic roles & 50–950 ramp

primary

#1D3F7C

secondary

#B08A45

accent

#AB43E5

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1D3F7C

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →